Water-filter.



' T. LINK-E.

. WATER'IILTER.

APPLICATION FILED MAY}, 1900, RENEWED NOV. 12, 1901.

N0 MODEL.

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, 'PAT'ENTED APR,28,1903.

No. 726,714. I v PATENTED APB.Z8',1903, T. LINKB-J WATER FILTER. I

APPLIOA'I 'ION FILED MAY 2, 1900. RENEWED NOV. 12; 1901.

10 MODEL. 2 snnm'- snnm 2.

INVENTOH A TTOHNE) UNITED STATES PATENT FFICE.

THEODORE LINKE, on NEW YORK, N. Y.

WATER-FILTER.

SPECIFICATION forming part of Letters Patent No. 7 2 6,714, dated April28, 1903 Application filed May 2, 1900. Renewed November 12, 1901.Serial No. 82,037. llo model.)

To (ZZZ whom, it may concern: 4 Beit known that I, THEODORE LINKE, acitizen of the United States, residing in the borough of Manhattan, inthe city and county of New York and State of New York, have inventedcertain new and useful Improvements in Water-Filters; and I do declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference beiu g had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification. I

My invention relates to improvements in water-filters, and has for itsprincipal object the providing of a construction in which a plurality ofoutlets for the filtered water are v formed, one of which leads to anauxiliary re ceptacle in which it may be stored.

Another object is to provide a filteringstone support arranged in suchmanner as to allow the filtered surface thereof to be free from anycontacting portions.

Another object is to provide a filteringstone with a cleansing-stoneheld in yielding contact with the surface thereof, said stones beingarranged to allow one of them to have a rotatable movement relative tothe other.

Other objects are the providing of a structure by means of which watermay be filtered rapidly, economically, which can be readily cleansed,which will discharge either filtered or unfiltered water, which issimple and efficient in operation, neat and attractive in appearance,durable in construction, and which 1 can be made at a moderate cost.

To these and other ends myinvention consists in the improvedconstruction and combination of parts hereinafter fully described,

illustrated in the accompanying drawings,

the compound stuffing-box, said members being shown separated. Fig. 4 isa horizontal sectional view taken on the line at tof Fig. 1. Fig. 5 is asectional view similar to Fig. 1, but showing but the'lower end of thefilter,

the conical valve being shown in a different position. Fig. 6 is ahorizontal sectional view taken on the line 6 6 of Fig. 5. Fig. 7 is ahorizontal sectional view taken on the line 7 7 of Fig. 2.

The present invention is an improvement on the several waterfiltersheretofore invented by me and is of the same general typenamely, the useof a natural-stone filter mounted to have a pivotal movement, whichmovement servesto allow the periphery to be cleansed, the water passingeither from without to within the stone or vice versa under pressure.These prior constructions, however, were arranged to filter water onlywhen the filtered-water outlet was open or' when the pressure in thefiltered-water chamber was reduced by the opening of such out- I let,and hence the supply of filtered water was somewhat limited, adisadvantage when the demand suddenly becomes greater than the normalsupply capacity of the filter. To remedy this, I have provided anauxiliary chamber, into which the water may be passed, (even though theprimary outlet is closed,) thus allowing of an accumulation of theilltered water, and in providing this auxiliary chamber I preferablysubject the water passing therein to the action of filtering material ofa different class, this latter material being intended more particularlyto deodorize the filtered water, making it especially applicable fordrinking purposes, while the supply obtained through the primary outletwould be applicable for use in other connectionssuch, for instance, asin cooking, &c.

-I have also found that in cleansing the surface of the filtering-stonethe best results can be obtained by the use of a cleansing-stone insteadof metallic means but as these stones are necessarily soft-in spots Ifind itadvantageous to provide a mounting for the cleansing-stone, whichwill not only allow of its being adjustably moved in contact with thefiltering-stone, but which will also allow of a yielding movementindependent of the adjusting movement, and in my prior constructions offilters I have generally formed the mounting for the filtering-stone bythe use of a perforated pipe leading through the cen ter of the stone,the perforations in the pipe allowing the water to pass into theoutletpipe; but this is somewhat disadvantageous, inasmuch as thefiltered surface is restricted and there is a liability of the watercontinually remaining between the periphery of the pipeand the stone.In'the present construction this is obviated by mounting the stone onits top and bottom surfaces alone, leaving the center entirely free fromany contacting portions, strength being given by means of the angularstem passing through the opening in the stone, by means of which thestone can be readily rotated without a tend ency of twisting anddestroying any of the parts, a result which sometimes obtained with theuse of the perforated pipe.

1 Many other diiferences appear, as will be plainly apparent upon areference beinghad to such prior constructions and to the detaileddescription of the present construction, which is given below.

In the construction shown in the drawings, 10 designates a cylindricalcasii'lg'having at one side an offset 11 for the reception of thecleansing-stone 39, hereinafter described. The top and bottom of saidcasingare closed by means of the top 12 and bottom 13, thus forming asubstantially cylindrical chamber having a lateral extension formed bythe offset 11. The top 12 is formed witha stuffingbox 14, having anenlarged central opening 48 leading to the cylindrical chamber, saidopening forming a passage-way for the unfiltered water carried throughthe inlet-pipe 45 and controlled by the movement of the cook 46, locatedin said pipe. The bottom 13 is provided with an opening, as shown, whileto the under surface of the bottom and prefererably fitted tightlythereto through the medium of a suitable gasket or washeris asupplemental bottom 49,having the downwardlyextending conical valve-seat53. A by-pass 37is formed in said bottom and supplemental bottom, asshown, said by-pass serving to form an outlet from the cylindricalchamber for a purpose presently described.

16 designates the supporting-stem for the filtering-stone, said stemhaving its lower end formed substantially as shown in Fig. 2 to form asubstantially conical valve 17, which is adapted to rest in the seat 53of the supplemental bottom, as shown in Figs. 1 and 5, the seat andperiphery of the valve being preferably ground to form a tight joint.Said valve 17 carries a hand-wheel 50, held in position by means of thecap 52, said wheel forming a means for readily. rotating said valve onits seat when desired. The valve is held firmly to its seat by means ofthe spring 51, interposed between the seat and the handwheel. The upperend of the stem 16 is formed tubular, as shown at 15, which tubularportion passes through an opening in the stuffmeme ing-box 14:, thusproviding suitable bearings for said stem at opposite ends thereof andpreventing any liability of wabbling and insuring the correctpositioning of the filteringstone.

The valve 17 is provided with a central enlarged opening 21,communicating with which is a by-pass 36, extending laterally throughsaid valve, said by-pass under certain conditions forming a continuationof the by-pass 37, heretofore described, thus forming an outlet from thecylindrical chamber to the opening 21, as shown in Fig. 1.

The upper portion of the opening 21 is red need in size, and the valve17 is screw-threaded, as at 34, for a portion of the distance along saidreduced opening, said screw-threads be ing adapted to receive thescrew-threaded end of the lower outlet-pipe 33 for the filtered water,said pipe having the valved cock 35 to regulate the outflow, the pipe 33extending through the opening 21, but leaving an annular spacesurrounding the pipe 33, this construction affording two outlets at thebottom from the cylindrical chamber, one through the by-passes 37 36 andthe other through the ports 20 and the pipe As shown, the valve 17 hasits upper face formed as a shoulder 23, on which is placed a suitablewasher and on the latter the filtering-stone 38, the stem 16 passingvertically through an opening formed centrally therein. The stone 38 isheld in position on said valve by means of the nut 22,1nounted on ascrewthreaded portion of the tubular portion 15, a Washer beinginterposed between the nut and the stone. When said nut is tightenedinto position, it will be seen that the stone will be held in afixed'position relative to the stem 16, being clamped on the valve 17,and therefore subject to its rotatory movement.

For the purpose of strengthening the stem 16 it is formed angular incross-section, as best shown in Fig. 7, and of a size less than thediameter of the opening in the filtering stone 38. This allows theentire inner periphery of the stone 38 to be free from obstructionstothe passage of the water, and thereby allows the filter to be operatedto its greatest extent. As will be seen, the space within the stone 38through which the stem 16 passes is closed by the Washers, and hence toform an outlet therefrom suitable ports 20 are provided at the bottom,said ports leading into the pipe 33, while similar ports 18 are formedat the upper end of said angular portion of the stem, which ports leadinto the opening 19 of the tubular portion 15. From this description itwill be seen that the unfiltered water enters the casing 10 through thepipe 45 and passage-way 48, and if the parts are in the position shownin Fig. 1 will pass downwardly and out through the bypasses 37 36 andthe opening 21, the discharge being unfiltered water. If, however, thevalve 17 is turned so as to break the continuity of the by-passes, therewill be no oscape for the water except by passing through thefiltering-stone 38 into the central opening or chamber therein andthence through the ports 18 and 20 into the tubular portion and the pipe33, and as the unfiltered water is introduced under pressure thefiltration will continue until the pressure within said central openingis equal to the pressure of the unfiltered water, whereupon .themovement will cease.

24 and 25 designate the lower and upper members, respectively, of acompound stufiing-box, the member 24 of which is adapted to coact withthe stuffing-box 14, said compound box serving to receive the meetingends of the tubular portion 15 and the lower end of a union connection54, which in turn leads to the pipe 26, leading to thedeodorizingchamber 29 of the receptacle 28. Said pipe 26 is providedwith a suitable stop-cock to regulate the passage of the water throughsaid pipe.

As shown, the deodorizing-chamber is 6 formed below the receptacle 28and is adapted to contain suitable material 30-such, for in stance, ascharcoal--a screen 31 serving to retain said material in its chamber. Asthe filtered water is forced through the pipe 26 under pressure, (due tothe pressure of the unfiltered water,) it is forced to percolate throughthe material 30 and passes into the receptacle 28 in a sweetenedcondition, from where it can be drawn as needed through the spigot 32.

While I have shown the receptacle 28 as located at the end of a pipeconnected to the filtered-water chamber and above the main portion ofthe filter, it will be readily understood that the said receptacle andits deodorizing-chamber may be located at any other suitable point, itbeing necessary only that said receptacle be connected to one of theoutlets for the filtered water.

As it is necessary to thoroughly cleanse the periphery of thefiltering-stone at intervals, I have provided a cleansing-stone 39,substantially thin and of a length equal to or greater than the heightof the filtering-stone, said cleansing-stone being located in the offset11, as shown in Figs. 1 and 4. Said stone 39 is provided with a recess42 on its rear edge to receive a suitable spring 40, which is adapted tocontact against the face of a leaf-spring 41, the ends of which are heldin contact with the stone by suitable means, While the central portioncontacts against the inner end of a set-screw 47, mounted in the offset11, as shown. As the set-screw is tightened the spring 41 will pressmore firmly against the stone 39, causing it to contact positively withthe periphery of the filtering-stone, such contact, however, being ayielding one to permit the stone 39 to conform to any uneven surface ofthe filtering-stone due to soft spots.

43 43 designate tap-holes in the offset 11, by means of which thecleansing-stone may be drawn into said offset when it is desired toremove the filtering-stone, any suitable means being provided forretaining it in such position, such as by passing a hook into the loopswhich retain the leaf-spring in position.

44 design ates a suitable tap-hole in the casing 10, by means of whichthe stone 38 can be readily inspected When desired.

In cleansing the stone 38 it is necessary only to rotate the valve 17one or more times and then bring the by-passes 37 36 into communication,whereupon the opening of the cook 46 will cause any sediment removed bythe cleansing-stone to be washed out of the casing through the by-passes37 36 and the opening 21. The advantages of this construction are manyand are believed to have been clearly pointed out.

. It is to be understood that I do not limit myself to the specificdetails of construction, as I reserve the right to use any and allmodifications thereof which may fall within the spirit and scope ofmyinvention as expressed in the appended claims.

Having thus described my invention, What I claim as new is- 1. A filtercomprising a casing having an inlet and an outlet for the unfilteredwater; a rotatable support extending through said casing serving as avalve to control said unfiltered-water outlet, said support containing apart of said outlet; a filtering-stone carried by said support, saidstone having a filtered- Water chamber; and an outlet from said chamberfor the filtered water.

2. A filter comprising in its construction, a

ral filtering-stone coming in contact with a spring-actuatedself-adjusting cleansin g-stone contained within said casing; a valvemechanism to pass unfiltered water, said valve mechanism being alsoarranged to retain unfiltered water between the casing and thefiltering-stone and thus force the same through the filtering medium toits outlets, said valve mechanism containing a part of the passage forunfiltered water from the casing, substantially as described.

3. In a filter, the combination of the-angular stem portion 16; thetubular portion 15 having the central passage 19; the ports 18 leadingfrom said stem portion to said central passage; the conical valve 17,having the outlet-pipe 33; the ports 20 leading from said stem portionto said pipe; and the filteringstone 38 removably secured on said stemportion, substantially as set forth.

4. The combination with a filter-case having a rotatable filteringdevice and a stationary cleansing device for said filtering device; of areservoir 28 having the compartment 29 adapted to contain a deodorizingmedium; the screen 31; and a stufiing-box between the said filter-casingand said reservoir,whereby the movementof said filtering device topersubstantially as and for the purpose set lnit cleansing thereof maybe had without forth. n. varying the normal position of the filtering-In testimony whereof I have al'fixed inysigchambers. I nature inpresence of two witnesses.

5. In a filter, the combination with a oasi THEODORE LINKE. ing having afiltering-stone; of an offset 11, \Vitnesses: having the adjnsting'sorew47; theoleausing- CHARLES BEOKMAN,

stone 39; the spring 41; and the spring 40, ADAM E. SOHATZ.

